Assionor to monroe cair



E. F. BRITTEN, JR.i

SHOCK ABSOHBER FOR CALCULATING MACHINE CARHIAGES.

' APPLIcmoN man APR. 14. 1920.

1,384,592.r Patented my .12,V 1921.

3 SHEETS-SHEET l.

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gru/vento@ l I SZW l M1/um 6% to'muj l E. F.`BR|TTEN,1R.

SHOCK ABSORBER FOR CALCULATING MACHINE CARRIAGES.

APPLICATION FILED APR. I4, \920.

Patented July 12, 1921.

3 SHEETS-SHEET 2.

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E. F. BRITTEN, In.

sHocK ABSORBER Foa cALcuLATlNG MACHINE CAHRIAGES.

APPLICATION FILED APR. I4, |920- 1,384,592. Patented July 12, 1921.

3 SHEETS-SHEET 3.

UNITED STATES PATEN'I oFFlca.

EDWIN F. BBITTEN, JB, oF MAPLEWoon, NEwJERsEY, AssrGNoR 'ro MONROE oAv 1,-v

cUL'ATINeMAcnINEcoNPANY, or NEW Yoan, N. Y., A conroia'i'rroNk or'y NEW Yom;

rrsnows-ansoanna ron cALcULATrNe-MACHINE CARRIAGES. f

To all whom t magi 'concer/n:r

Beit known thatffI, EDWIN F. B'Rrr'rnN, Jr., a citizen ofthe United States, resident of Maplewood, in the county of EssexV and State ofNew- Jersey, have made a certain new and useful Invention in Shock-Absorbers for Calculating-Machine Carriages; and I declare the following to be a full, clear, and exact description of the same, such as will enable others skilledin the art to which the shlfting operation, and the crank pin 64 l it appertains to make and use the invention,

reference being had rto the accompanyingA drawings, and to letters or fi res kof reference marked" thereon, which orm a part of this specification. i'

Figure 1 1s a away and partsl in section.` Fig. 2 is a vsec*- tion on the-line 2--2, Fi .1; Fig. 3 is a secvvtion of the `left hand en ofthe machine, on

the line 3&3, Fig. 2,wththe' carriage raised. Fig. 4 is a sectionof the rear; portion of the" machine on the line Fig-.1,'with thecarria e raised.

` calculatingy machines or'registers, such for instance as disclosed-in the reissue patent to fall ofthe carriage inshiftingwthe same. l

I The invention. consists in the novel'con-l j fstructlon and 'combmations of parts, as here-` inafter set forth. y

the accompanyingfdrawings, illustrat ing the invention, the numeral 1 designates i f theel casing of a calculatingmachine kof the type of thepatent'statei and 2 is the end-y 5 wise-shiftable carriage, pivoted in' rear to saidlcasingat 59.1( Intermediate gears 12, mounted `upon afshaft of the main frame i1,

register wheels 13, the latter mounted upon aj Y sha t-4,xand by car 5 members-j,upon-shaft i' The `carriage 573;-theshafts fiend: 3 being' rotatedby suit-g able driving y connections to operate the-l w'heel's 13 and registerthereon the amounts 1 yset`1'1p on the keyboard 18,k all as described in" 'saidlpatentk j* 2'islshifted endwise by means ,Means are provided to draw the carriagefront viewof a machine e111-, `bodyingfthe invention, 1 withparts broken :extensionarm' a,'p1voted toythe main lever engaging notches i of the lower forward.

l y, Specification of Letters Patent. Patntd July 12, 1921. 4`-Vapp1i =m1m alga April'm; 1920.y serial Nq. 373,835.

, of a rotatable rod 61, crank pins 64 of saidrod edge of the carriage in the shifting vroperation,vthe carriage being raised pivotally as it is shifted, in order to disengage the gears'of the register wheels yfrom the intermediate gears 12, also as described in said patent.` The rod 61 being operated to vraise the carriage pivotally and effect the first halfof having passed dead center,'the latter halfwof the shifting` operation will be accomplished automatically, through force of gravity, as stated particularly in said patent. -f

positively downwardly andv to positively en- 'f ing, as described particularly'in a co-pending. application for patent of E. E. Phinney, Y f p SfNo. 356,882;k heinvention hasvrelation to shock absorb'ers, and more particularly'to cushioningy meansfor the endwise-shiftable carriages sof 'thesele'ctor shaft 4 and having a circumferi' entialfnotch e," al compound lever 'cwbeing pivoted at 7c and having a toothed extension b, normally underl 'ing said notch, andan? at m and having an upper hookedl end a@ en l gaging a horizontal ledge or shoulder h, yat

'f thek forwardlower portion of the carriage.A

AIn the normal position of the parts 'stated', i Y

the carriage is capable of'beingrais'ed piv-votally, the compound lever c being raised.'

therewithfand the tooth b of said lever en` tering the notch e of the disk.y In the latter i half of thejshifting-operation, .or'in the'fall of. thecarriage to normal or lower position,

" f` should vthel downward movement ofthe car-` riage rbe incomplete, or such as lnot to '-fully@ i y engage the :,re'arsgofthe register wheels 'with` r are adaptejd to f meshiwithuthevv vgears y13' *f of s the intermediate gears, no harm will bedone,

inasmuch fas the initial movementof vthe;v

crankfkhandle inthe registering operation will'ro'tate the shaft 4 and therebycause one i 'or the otherof the end walls ofthenot'ch e to 'engage'theft'ooth `b and force the'lever c the intermediate gears prior to any rotation of the intermediate gears in registering.' f

jAttheVright-'hand nd-ofthe casing, a

levery is fulcrumed intermediately of its `111'0 length at 20', said lever having, at the upper end of its upper arm, an anti-friction roller 2l, located immediately below the lower forward horizontal edge portion 22 of the carriage shell, just in rear of the ledge z, aforesaid, being held upwardly against said edge by a spring 23 connected with theV and upon release of the carriage, or in the` latter half of the shifting operation, the fall of the carriage will be resisted by the spring pressure of said roller sufliciently toca-use the carriage notch z' coming intov action to engage the related c i'anlr pin Gil ina cushioned manner, or without shoclr or eolienssion.

The spring 23 being of sufficient strength to properly cushion the carriage in its fall, would ordinarily, oi without the coaction of the carriage locking or positioning means stated, tend to hold the carriage sufficiently raised at all times to disengage the gears of the registered wheels from the intermediate gears, or at least to hold these gears from fully meshed engagement. The spring 23 is therefore enabled to be made of suiiicient strengthto counteract a considerable proportion of the weight of the carriage, the allowance of a considerable factor of safety being unnecessary, owiiigto the coaction of the carriage locking, and positioning means stated, since, should the spring interfere with the proper meshing of the gears, the carriage locking and positioning means would correct this beforeY any registration could take place.

It has previously been necessary to provide means on the frame of the machine,`

engaged by means on the carriage shell, to limit the downward movement or fall of the carriage, but in view of the cushioning device active throughout the fall of the carriage to gradually bring it to rest, the aforesaid stopfor limiting means is enabled to be eliminated, and the carriage limited in its downward movement by engagement of the notches at the forward edge of the carriage shell with the crank pins 64, nov shock or vibration being transmitted to the carriage shifting rod. Y Y

The invention is found to eliminate the objectionable noise and shock or vibration consequent upon the shifting of the carriage, and has the further advantage of lightening the resistance to be overcome, whereby the shifting operation is facilitated.

I claim:

l. In a calculating machine having a series of gears, an endwise-shiftable pivoted "fall thereof.

2. lfnV a calculating machine having a1 series of gears, anendwise-shiftable pivoted carriage having a series of gears engaging the first-named gears, and means engaging the carriage to raise the same pivotally and shift it endwise, means for cushioning the fall of the carriage active throughout the fall thereof, and means for insuring the full'engagement of said gears as stated.

In a calculating 1 nachine,a series of gear wheels, an endwise-shiftable pivoted carriage having a series of: gear wheels en-v gaging the first-named gear wheels, means for operating said gear wheels, and means for raising the carriage pivotally and shiftu ing it eiidwise, means for cushioningl the fall of the carriage activethroughout the fall thereof, and means actuated by said operatingzmeans to insure the engagement of said gears as stated.

4. In a calculating machine, a series ofy gearl wheels, an endwise-shiftable pivoted carriage having a series of' gear wheels engaging the irst-named gear wheels, means for operatingsaid gear wheels, and means for raising the carriage pivotally `and shifting it endwise, means for cushioning thefall of the carriage active throughout the fall thereof, and means for insuring the engagement of said gear wheels duringy the operation thereof. e

5. In a ealculatinv machine, a series'of gear wheels, an endwise-shiftable pivoted carriage having a series of gear wheels engaging the first-named gear wheels, and means for raising the. carriage i p ivotally and shifting it' endwise, means for cushion'- ing the fall of the carriage active throughout the fall thereof and consisting of a spring-pressed lever engaging the free' edge portion of the carriage.

6. In a calculating machine, a seriesoff Vgear wheels,- an endwise-shiftable pvoted carriage havingz a series ofgeardwheels en? gaging the first-named gear wheels, andP means engaging thecarriage to raisethe sainel pivotally and shift it endwise, of means for cushioningtlie fall ofthe carriage, normally tending to raisev the car-- riage pivotally, andmeans for forcing theV carriage downwardly and insuring l full i engagement ofthe gear wheels.

7. In a calculatingmachine, a` seriesy of gear wheels, anl endwise-shiftable pivoted' carriage having register wheels, a series `of gear wheels connectedV therewith and. en- Y gaging the first-named gear wheels, meansl engaging the carriage to raise the same pivy 1,as4,592 l otally and shift it endwise, selecting elef mechanism, means for cushioning the fall ofthe carriage normally tending to raise the carriage pivotally, and means for forcin the carriage downwardly and insuring ful engagement of the gear wheels, operative upon the initial movement of said operating device.

8. In a calculatin machine, a series of gear wheels, an en wise-shiftable pivoted carriage having a series of gear wheels engaging lthe first-named ear wheels, and means enga ing the carnage to raise the same pivota y and shift it endwise,means for cushioning the fall lof the carriage nor- K y mally tending to raise the carriage -pivotally, and means for forcing the carriage downwardly and insuring the enga ement of said gear wheels, the carriage s ifting means bemg adapted to limit the downward movement of the f carriage.

9. In a calculating machine, a serles of gear wheels, an endwise-shiftable pivoted carriage having a series yof notches and ka series of geary wheels engaging the first'- named gear wheels, means or raising the carriage pivotally and shiftin it` endwise, including a rotatable rod havmg a double crank arm rovided with pins engaging said notches, secting elements, lcarry mechanism, and an operating device for said selecting elements and said carry mechanism, means for cushioning the fall of the carriage normally tensioned to raise the carriage pivotally, and means for forcing the carriage downwardly to insure full engagement of the gears, operative upon the initial movement of said operating device, said crank pins being adapted to engage said notches to limit the downward movement of the carriage.V f Y In testimony whereof I affix my signa? ture in presenceof two witnesses.

EDWIN F. BRITTEN, JR.

f Witnesses:

F. E. Noms, A; HARNETr. 

